Building block



Mwrch 22, 1927.

W. H. SCHWEIZER BUILDING BLOCK Filed April 5, 1926 Patented Mar. 22,1927.

UNITED STATES WILLIAM H. SCEWEIZER, OF BALTIMORE, MARYLAND.

, BUILDING :BLoox.

Application filed April 3, 1826. Serial'No. 98,698.

This invention is a novel improvement in molded building blocks and thelike, and the principal object thereof is to provide an integralmoisture-proof building block, molded or otherwise formed of concrete,cinders, or other plastic material, said block having three parallelwalls, connected by integral webs at their ends andcentral portions, themiddle wall being provided with an insert or layer of materialimpervious to moisture, the impervious layer extending beyond the normalcontour of the block at the top and one end face thereof, the oppositefaces of the block being provided with longitudinallydisposed grooves toreceive the adjacent projecting portions of the impervious layer on theadjacent blocks, when placed together to form a wall or the like,whereby moisture or dampness will be prevented from passing through theblocks from the outer to the inner surfaces thereof, or along the mortarjoints between. the blocks, when assembled to form a wall or the like.

Other minor objects of the invention will be hereinafter set forth.

I will explain the invention with reference to the accompanying drawingwhich illustrates one practical embodiment thereof to enable others toadopt and use the same, and will summarize in the claims the novelfeatures of construction for which protection is desired.

In said drawing:

Fig. 1 is a perspective view of a complete molded block, detached.

Fig. 2 is a top plan view of a section of a wall constructed with myblocks.

Fig. 3 is an end elevation of a section of the wall shown in Fig. 2'.

As shown in the drawings, each unit'of the wall or the like, preferablycomprises a substantially rectangular integral block made of concrete,cinders, or the like, in the usual manner, said block having fourrectangular openings A extending therethrough, adjacent the fourrespective corners of the block, whereby the block is divided into threeparallel longitudinally disposed wall portions, B, C, D, connectedtogether at their ends by webs E; and also connected'together at thetransverse center of the block by webs F. The middle wall portion G hasformed therein, during the process of molding the block, an insert or GG the projecting portions layer of material G which is impervious towater or moisture, which material G may be slag, moisture-proof cement,slate or any other similarly impervious material, layer G, as abovestated, being formed in the middle wall portion C, during the process ofmolding the block, in any desired manner.

The layer G preferably extends slightly above the upper face of theblock as at G, and also beyond one end face thereof, as at G The bottomface of the middle wall portion G of the block in way of thelayer G islongitudinally grooved as at C to receive the projectin portion G of theblock immediately be ow when the blocks are assembled in a wall or thelike, as shown in Figs. 2 and 3. Similarly, the end face of the wallmember C of the block opposite portion G is provided with a verticallydisposed groove 0 in wall portion C, to receive the projecting portion Gof the adjacent block when the blocks are assembled to form a wall orthe like.

The projecting portions G G are each provided with a series or row ofholes or indentations G in their outer faces for the purpose hereinafterdescribed.

1 In assembling the blocks in a wall orthe like, mortar M is spread inthe usual manner over the top and end faces of the blocks on opposite,sides of the projectingr portions one block entering into the recessesor iongitudinal rooves C C in the adjacent blocks. if any mortar,however, should ing portions G G are inserted therein, such mortar willenter the holes or indentations G in the outer faces of the projectingportions G G and allow the blocks to properly seat in order that'thebearing on each block will be over'its entire surface or area, thebearing being equally distributed over the entire surface or area of theblock. The projecting portions G G of the layer G, divide the mortar M,which is, of course, not impervious to moisture, between adjacent facesof the blocks so that no moisture can penetrate along the mortar linepast the la er G, from the exterior to the interior wa l of the block. V

Moreover, the extending portions G G, of the layer G, when inserted inthe grooves C C insure that he blocks'will be erected enter the groovesC C when the projectin perfect alignment, the portions G, G- preventingone block from sliding laterally /of the other blocks. v

'I do not limit my invention to the exact 5 form shown in the drawingsfor obviously changes may be made therein within the scope of the/claim.

I claim In a building block, an integral layer 10 of material imperviousto moisture and projecting beygnd two faces thereof, the o poslte facesing correspondingly roove to receive the-projecting portions 0 theadjacents blocks when assembled in a wall or the like each projectingportion of the layer being provided with series of holes in its outerend, for the purpose specified.-

In testimony that I claim the foregoing as my own, I aflix my si ature.

WILLIAM H. SCHWEIZER.

